Isothermal Vapor-Liquid Equilibrium Measurements of 1,1-Difluoroethane plus N,N-Dimethylformamide and N,N-Dimethylacetamide

被引：16
作者：
Meng, Xuelin [1 ,2 ]
Zheng, Danxing [1 ]
Li, Xinru [1 ]
Shen, Yanshu [1 ]
机构：
[1] Beijing Inst Chem Technol, Coll Chem Engn, Beijing 100029, Peoples R China
[2] Guangxi Vocat & Tech Inst Ind, Nanning 530001, Peoples R China
来源：
JOURNAL OF CHEMICAL AND ENGINEERING DATA | 2013年 / 58卷 / 05期
基金：
中国国家自然科学基金;
关键词：
ABSORPTION CYCLE; WORKING FLUIDS; SYSTEM; SOLUBILITY; 1,1,1,2-TETRAFLUOROETHANE; SIMULATION; HFC152A; PERFORMANCE; HFC134A; HFC143A;
D O I：
10.1021/je3013793
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Vapor-liquid equilibrium (VLE) data of working fluids play a vital role in the research and development of absorption refrigeration technology. In this paper, the VLE data of two new working fluids, 1,1-difluoroethane (R152a) + N,N-dimethylformamide (DMF) and R152a + N,N-dimethylacetamide (DMAC), were measured by the static analytical method at temperatures from (293.15 to 353.15) K. The experimental results show that R152a exhibits better solubility characteristics with DMF and DMAC, and the solubility of R152a in DMAC is slightly better than that in DMF. All experimental data were correlated by the activity coefficient model of five-parameter nonrandom two liquid (NRTL). The calculated results are in essential agreement with the experimental data, and the maximum relative deviation of pressure are 3.69 % and 3.51 %, the average relative deviation of pressure are 1.60% and 1.11 %, for binary systems R152a + DMF and R152a + DMAC, respectively.
引用
收藏
页码：1078 / 1085
页数：8
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